Safety helmet



FIG. 1 is a top plan view of a safety helmet showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view of a second embodiment thereof;

FIG. 7 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a rear elevational view thereof; and,

FIG. 10 is a bottom plan view thereof. 

The ornamental design for a safety helmet, as shown and described. 